PostGIS  2.5.0dev-r@@SVN_REVISION@@

◆ collectFacesWithEvenAncestors()

static GEOSGeometry* collectFacesWithEvenAncestors ( Face **  faces,
int  nfaces 
)
static

Definition at line 1020 of file liblwgeom/lwgeom_geos.c.

References countParens(), Face_t::geom, lwalloc(), and lwfree().

Referenced by LWGEOM_GEOS_buildArea().

1021 {
1022  GEOSGeometry** geoms = lwalloc(sizeof(GEOSGeometry*) * nfaces);
1023  GEOSGeometry* ret;
1024  unsigned int ngeoms = 0;
1025  int i;
1026 
1027  for (i = 0; i < nfaces; ++i)
1028  {
1029  Face* f = faces[i];
1030  if (countParens(f) % 2) continue; /* we skip odd parents geoms */
1031  geoms[ngeoms++] = GEOSGeom_clone(f->geom);
1032  }
1033 
1034  ret = GEOSGeom_createCollection(GEOS_MULTIPOLYGON, geoms, ngeoms);
1035  lwfree(geoms);
1036  return ret;
1037 }
void lwfree(void *mem)
Definition: lwutil.c:244
const GEOSGeometry * geom
static unsigned int countParens(const Face *f)
void * lwalloc(size_t size)
Definition: lwutil.c:229
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